I know I shouldn't get my hopes up but I think I'm experiencing some implantation cramps today. AF is in two days and she's very regular and predictable, but today my DH and I were baby dancing and I started cramping, then after we finished the cramps got worse and were on and off for about 30-45 minutes. I'm either 12-14 dpo, so it would add up. But this did happen to me last cycle, I had some bad cramping two days before my period, even had some brown spotting the night before and BOOM! AF showed up right on time. I'm going to wait out the next to days and just hope AF doesn't come.